I don't and have not presumed to tell you how others do, or ought to operate
Oh really????:-
Does one plan a series of diversionary alternates when crossing the rocky mountains? Of course not.
When overflying The Himalayas? Not necessary. Are we going to drop down, go around this mountain and then that, then connect with a lower airway and follow that? Doubtful. Point for the destination, notify ATC (such as it may be in that part of the world), and go in that direction, taking lower when able. Again, not rocket science.
There was no "Well this is OUR procedure"- Sounds more like "Listen carfully, Sonny,This is how it's done by us professtionals"
Such charts and such planning are not a part of our operation, and we do work extensively throughout that region.
All well and good, SN4- but you did not say "MY operation does not require such things", but the they were UNNECESSARY- implying NO operation required them.
In this you were, as I said, quite simply wrong. It is implicit in the regulations I and most Airlines operate under that a proven procedure be in place to 1) Ensure the cabin is below FL150 before the Pax O2 runs out and 2) Terrain avoidance is guaranteed in the event of an engine failure.
How long does your PAX O2 last (assuming you carry pax, and if you don't, how can you possibly feel justified commenting on this subject!!) ? Are you SURE you are ALWAYS able to descend sufficiently quickly to not run out?On what basis do you have that surety? Is your SE ceiling ALWAYS higher than you MSA? If not, fine! Some operations except higher risks than others. Ours don't, and REQUIRE DARD procedures to be published and adhered to.
To suggest such things are unnecessary because you don't use then is either arrogant, ignorant or both.